Double salt of aluminum and potassium



nonnnn'r n1. LA roars/or on rcaeo, rumors, essrenon .ro lsrranr, &norms,

a oonrona'rroiv or' vEw J'nnsnY;

BALTIMORE, MARYLAND,

are stares DOUBLE snri'r or ALUMINUM Ann ro'rnssrrrivrf newest. N0Drawing.

To all whom it may concern: 7

Be it known that I, Nomsnn'r M. LA Ponrn, a citizen of the UnitedvStates, residing at Chicago, in the county of Cook and State ofIllinois,

. have invented certain new and useful Improvements in Double Salt'ofAluminum and Potassium; andI do hereby declarethe following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and usethesame.

This invention relates to chemicals hav ing a medicinal action upon thehuman body and more particularly 'to a double salt of aluminum andpotassium.

Its object is to produce a substance, susceptible of absorption into theblood stream of the living body, and enabling the blood stream ofpersons whose bones, soft tissues and fluids have become toxic throughthe invasion of pyogenic infections successfully to resist and destroythe invaders and their toxins.

It consists in a double nitrate, or series of double nitrates, ofaluminum and potassium, that possess valuable astringent, leu-'cocytosic and phagocytosic properties that render them most efiicientagents for accomplishing the aforesaid object. I prefer to designatethese salts as nitrato salts or more specifically aluminum-potassiumnitrato salts. These aluminum-potassium nitrato salts are relativelydevoid of toxic action.

I have found that the double nitrates herein referred to exercise markedinfluence uponthe metabolism and upon the nature of the blood,increasing the number of red corpuscles and of both leucocytes andphagocytes in the blood, whereby the ability of the system of a personmedicinally treated with said salts to resistand overcome the invasionof pathogenic organisms oats, sawdust, kaolin, bran,

and other toxins is materially increased,

and a feeling of general improvement becomes speedily apparent.

The said nitrato salts may be applied externally to the skin with asuitable vehicle. The vehicle maybe a suitable non-irritant substancesufficiently absorptive to suspend v the salts and absorb pus, orexudates. Ex-

perience has taught that are suitable hlCleS. 7 11:1 2

By the term dose I mean the dry weight of the nitrato salts to'beincorporated in the Specification of Letters Patent.

3) .sKN 0 .1011 0 ordinary rolled Patented May 3 ,1921.

Application filed. October 21, 1920. Serial No. 18,540.

dry weight of: the vehicle for one treatment. I consider the normalunitdose to-consist of thirteen grains of dry salt to one ounce The dose,

of dry oats vor similar vehicle. 7 howevenmay 1n pract ce vary'fromabout 7 grams to. 50 or more grains per ounce of dry oats or. likevehicle.

Thus far I have treated human patients by external applications, only,of said trates. I- have treated animals hypodermaticallyand orally'with'a' viewof estab- .lishino' toxicity andchangeof metabolism.

It has been learned that the toxicity is pracr v ,QFFIQE.

tically mil. Animals fed for weeks on a diet containing considerable ofthe salts did not appear to be affected in their general con- I dition'.

- The new double salts of aluminum and potassium. to which thisinvention appertains have the general formula Al(NO g KNO .H,O. Theformulas of the several salts produced by me are as follows: Al (NO.3KNO,.1OH,O Al (N0 2KNO $11 0, and A1(NO,),.KNO .wH,O, 03 being,

usually ten, although under certain atmospheric conditions it may beless or more, the limits lying substantially between five and fifteen.

The salt represented by the formula Al substance obtained uponcrystallization of a solution of potassium nitrate and aluminum nitratein nitric acid; the other two salts named may be crystallized from -themother liquor after removal of the first.

In order to obtain the said double nitrates, suitable quantities ofpotassium nitrate and aluminum nitrate crystals are introduced intoconcentrated nitric acid kept hot by means of a water bath until allcrystals are dissolved. The quantity of crystallized aluminum nitrateand potassium nitrate used should be in the proportion of the molecularweight of one molecule of aluminum nitrate to three times the molecularweight of one molecule of potassium nitrate. For example, 5 grams ofaluminum nitrate, and 303 grams of potassium nitrate in sufficient hotconcentrated nitric acid to dissolve the substance will produce asolution from which the said 3KNO .10I-I O will crystallize out when thesolution has cooled.

7105 double salt Al(NO By concentrating the j mother liquor left afterthe removal of the said predominant double nitrate one or the is thepredominating to dissolve one other or a mixture of the double nitratesand Al(NO KN 0 401-1 0 may be crystallized out. The crystals may beseparated from the mother liquor by a centrifuge or a suction pump anddried in a vacuum desiccator over calcium oxid in a current of dry air.

In practice I have found that about 500 cubic centimeters ofconcentrated nitric acid is a suitable quantity of acid in which kilo ofaluminum nitrate and potassium nitrate mixed in the proportionspreviously indicated.

The described nitrato salts or double nitrates crystallize from the.concentrated nitric acid. solution in the formof colorless rhombic andmonoclinic crystals. They are readily soluble in cold or warm water insubstantially all proportions. They possess an astringent, slightlymetallic taste.-

' Having described my invention what I claim and desire to Secure byLetters Patent ofvthe United States is:

1. A new chemical substance consisting of a double nitrate of aluminumand potas sium. V I t 2. A new chemical substance consisting of a doublesalt of aluminum nitrate and p0- tassium nitrate represented by theformula Al(NO .g KNO .wH O. o

3 new chemical substance consisting of a double salt of aluminum nitrateand p0- tassium nitrate represented by the formula Al(NO .3KNO .10I-I O.

4 he process of making a double aluminum-potassium salt which consistsin dissolving a quantity of crystallized aluminum nitrate and a quantityof potassium nitrate in the proportions of one molecule of the formersubstance to three of thevlatter substance in sufficient hotconcentrated nitric acid to completely dissolve said substances, andcrystallizing out the said double salt.

In testimony whereof I affix my signature.

NORBERT M. LA PORTE.

